Fix use_lib_reline for test/readline

1 files changed, 4 insertions, 1 deletions

diff --git a/test/readline/helper.rb b/test/readline/helper.rb
index dbbe5a26c8..ee157722f1 100644
--- a/test/readline/helper.rb
+++ b/test/readline/helper.rb
@@ -11,7 +11,10 @@ def use_ext_readline # Use ext/readline as Readline
 end
 
 def use_lib_reline # Use lib/reline as Readline
-  Reline.send(:test_mode)
+  Reline.send(:remove_const, 'IOGate') if Reline.const_defined?('IOGate')
+  Reline.const_set('IOGate', Reline::GeneralIO)
+  Reline.send(:core).config.instance_variable_set(:@test_mode, true)
+  Reline.send(:core).config.reset
   Object.send(:remove_const, :Readline) if Object.const_defined?(:Readline)
   Object.const_set(:Readline, Reline)
 end